Ventilating apparatus.



UNITED STATES a FFICE...

PATENT LUDVIG G. SlVANSON, OF SPRINGFIELD, MASSACHUSETTS, ASSIGNOR OFONE-HALF TO AUGUST C. J. SYVANSON, OF SPRINGFIELD, MASSACHU- SETTS.

VENTILATING APPARATUS.

SPECIFICATION forming part of Letters Patent No. 696,914, dated April 1,1902.

Application filed May 25, 1901. Serial No. 61,878. (No model.)

To all whont it may concern:

Be it known that I, Louvre G. Swanson, a citizen of the United States ofAmerica, and a resident of Springfield,in the county of Hampden andState of Massachusetts, have invented certain new and usefulImprovements in Ventilating Apparatus, of which the following is a full,clear, and exact description.

This invention relates to improvements in means for acquiringventilation in rooms in dwelling-houses and other buildings, the ob jectbeing to provide, in connection with a suitable opening properly locatedfor the exit of the impure air, gases, smoke, or steam which may be inthe room, novel means for normally closing the said opening which issusceptible of easy and convenient operation for opening and retainingopen the closure for said opening.

The invention consists in the constructions, arrangements, andcombinations of parts which produce the ventilating apparatus applicablein various situations, all substantially as hereinafter described andexplained, and set forth in the claims.

In the accompanying drawings the improvements are illustrated as appliedin conjunction with the exit-opening for gas, smoke, steam, dad, in theventilating-hood, which is indicated as located above a range orcookstove.

Figure 1 is a front View with parts broken.

out in horizontal section for increased clearness of illustration. Fig.2 is a vertical sectional view as taken substantially on the line 2 2,Fig. 1. Fig. 3 is a perspective view of the closure for theventilating-opening and the operating means therefor, these devices anda part of the structure on which it is mounted being removed from thehood.

Similar characters of reference indicate corresponding parts in all ofthe views.

In the drawings, A represents the hood, which is understood as havingits location suitably above a range, cook-stove, or fireplace, the samebeing of a broad and downwardly-flaring character and havingintermediate between its closed top and its open bottom the horizontalWall or partition a,

go which is provided with the opening Z) therein,

such opening being shown as of considerable area, and the saidpartition-wall is indicated as being removable from its place Within thehood, in which are the permanent lugs 01 d, to Which are engaged thedepending bolts f, the shanks of which extend downwardly loosely throughthe perforations in the horizontal partition a and receive at theirlower ends the thumb-nuts h, which set closely against the under side ofthe removable partition board or plate a and confine the latter in astable manner in its horizontal position within the hood.

From the upper part of the space or chamber within the hood leads theconduit 7), which may enter a special fine in the chimney in a manner toafford a good draft, or this passage may lead to the exterior of thebuilding.

The plate or wall a has the upstanding lugsjj near the rear boundary ofthe opening 1), and for closing the opening is the plate or door on,which also has lugs or ears 7c to match with the lugs j. The rod orpintle n passes through the adjacent lugs, hinging the parts together.

The spring 0 is applied in connection with the hinge for normallymaintaining the plate or door on in its downwardly-swung position forclosing the opening I) in the walla, and this spring is composed of asingle length of wire, having the middle portion thereof bent into theelongated-U shape, (indicated at 10,) the extremities thereof beingformed into the opposite alined coils 12 12, which encircle thehinge-rod or, while the extremities 13 13 of the wire forming thedoubled coiled spring are extended in the opposite direction from theelongated intermediate U -shaped part 10, the latter portions 13 13hearing on the upper face of the wall a, while the intermediate U-shaped part 10 bears with a yielding pressure in a downward directionupon the upper surface of the plate or door m.

12 represents a U-shaped bracket affixed to the rear of the centralportion of the opening I) and the closing-plate m therefor, such bracketbeing by its foot-lugs p riveted or otherwise secured to the wall orpartition-plate a.

A sheave q is mounted to freely turn within the bracket 19, over andaround which is 100 guided the chain or other flexible connection .9,said chain being connected to the eye 1',

located near-the margin of the door or closing-plate m, and the portionof the chain which passes over and behind and depends vertically fromthe sheave extends downwardly. through the perforation t in thepartition-plate a to an accessible position below the hood for beingoperated.

The chain has at its lower portion one or more ring-eyes u u, locatedrelatively to which is a stop-pin o.

The door or plate m is normally springpressed and held tightly closedover the opening 1) when it becomes desirable to open a way for thepassage of smoke, steam, gases, odors, or impure air from the kitchen.The chain .9 is drawn downwardly, opening the door 49?. and leaving theopening I) unobstructed, the chain having an interlocking engagement byone of its eyes with the stud or pin 0, which insures the retention ofthe door m in its opened position.

Immediately the engagement between the parts to and v is discontinuedthe door is again tightly closed.

Having thus described my invention, what I claim, and desire to secureby Letters Patent, is

1. A flaring downwardly-open hood, for employment above a range, havingtherewithin a horizontal partition provided with a ventilating-openingb, and also with an aperture 75, and said hood havinga passage leadingfrom an upper portion thereof, combined with a,

plate or closing-door, for said opening b, hinged to the partitionadjacent the latter opening, and having a'spring for normally forcingthe door to its closed position, a sheave" mounted within the hood abovesaid partition, a flexible connection secured to a free edge portion ofthe door, having a guiding engagement around said sheave, and extendeddownwardly from the latter through said aperture t to a position belowthe hood, substantially as described.

2. A structure having the studs or bolts,

the removable sectional wall, having the opening 1), engaging over saidstuds and confining means therefor, the door hinged to said wall, thebracket mounted on said wall and provided with the sheave, and the chainsecured to a free portion of the door and guided over the sheave to anaccessible position for operation.

3. In an apparatus of the character described, the combination with thewall a having a Ventilation-opening b, and provided with ear-lngsj andbracket 19, of the plate or door m having the ear-lugs k, the hinge-rodn, the spring having intermediate U portion 10, alined coils 12, 12,surrounding the rod and the oppositely-extended end portions 13, thesheave q in said bracket, and the chain 3, secured to a free portion ofthe door and thence guided over said sheave to a convenient place to bedrawn upon, all substantially as described.

4. In an apparatus of the character described, the combination with apermanent wall having the bolts or screw-studs f f, of the removablewall at having the perforations g g, a ventilation-opening b, andprovided with ear-lugs j and bracket 1), the nuts h h, the plate or dooron having the ear-lugs 7c, and the perforation t, the hinge-rod n, thespring having intermediate U portion 10, alined coils 12, 12,surrounding the rod, and the oppositely-extended end portions 13, thesheave q in said bracket, and the chain 8, secured to a free portion ofthe door and thence guided over said sheave and through said perforationt to a convenient place to be drawn upon, and the confinement-stud 0adjacent the free end of the chain, all substantially as described andshown.

Signed by me at Springfield, Massachusetts, this 18th day of May, 1901.

LUDVIG G. SWANSON.

Witnesses:

WM. S. BELLoWs, AUG. 0. SWANSON.

